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General (Tables) | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of reclassifications to amounts previously reported | The reclassifications to the amounts previously reported in our Consolidated Statement of Earnings are summarized below (in millions).
| Third Quarter 2024 |  | First Nine Months 2024 |
| As previously reported |  | Reclassification |  | As reclassified |  | As previously reported |  | Reclassification |  | As reclassified |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
Insurance and Other: |  |  |  |  |  |  |  |  |  |  |  |
Sales and service revenues | $ | 38,863 |  | $ | 10,590 |  | $ | 49,453 |  | $ | 115,227 |  | $ | 36,000 |  | $ | 151,227 |
Interest, dividend and other investment income |  | 5,896 |  |  | 32 |  |  | 5,928 |  |  | 15,450 |  |  | 100 |  |  | 15,550 |
Railroad, Utilities and Energy: |  |  |  |  |  |  |  |  |  |  |  |
Utility and energy operating revenues |  | 16,598 |  |  | (10,584 | ) |  | 6,014 |  |  | 52,336 |  |  | (35,986 | ) |  | 16,350 |
Service revenues and other income |  | 1,383 |  |  | (38 | ) |  | 1,345 |  |  | 3,935 |  |  | (114 | ) |  | 3,821 |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |
Insurance and Other: |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales and services |  | 30,323 |  |  | 9,256 |  |  | 39,579 |  |  | 90,109 |  |  | 32,344 |  |  | 122,453 |
Selling, general and administrative expenses |  | 7,324 |  |  | 895 |  |  | 8,219 |  |  | 17,292 |  |  | 2,501 |  |  | 19,793 |
Interest expense |  | 315 |  |  | — |  |  | 315 |  |  | 961 |  |  | 96 |  |  | 1,057 |
Railroad, Utilities and Energy: |  |  |  |  |  |  |  |  |  |  |  |
Utility and energy cost of sales and other expenses |  | 14,607 |  |  | (10,151 | ) |  | 4,456 |  |  | 47,694 |  |  | (34,845 | ) |  | 12,849 |
Interest expense |  | 899 |  |  | — |  |  | 899 |  |  | 2,799 |  |  | (96 | ) |  | 2,703 |

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- Definition Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-7 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 + Details
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